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RESEARCH PAPERS

Fracture Mechanics Consideration of Residual Stresses Introduced by Coldworking Fastener Holes

[+] Author and Article Information
W. H. Cathey

San Antonio Air Logistics Center, Kelly Air Force Base, Texas 78241

A. F. Grandt

Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio 45433

J. Eng. Mater. Technol 102(1), 85-91 (Jan 01, 1980) (7 pages) doi:10.1115/1.3224790 History: Received April 14, 1978; Revised February 01, 1979; Online September 15, 2009

Abstract

Aluminum test specimens are prepared with precracked fastener holes, coldworked by means of an oversized mandrel, and then cycled to failure under constant amplitude loading. A simplified fracture mechanics analysis is performed to predict the fatigue crack growth life caused by the coldworking process. As discussed here, the analysis method is capable of obtaining reasonable estimates for the test specimen fatigue life and of determining the maximum crack size which can be “permanently” arrested by the coldworking process.

Copyright © 1980 by ASME
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